    .next_btn_box{
        z-index: 2;
        height: calc(128rpx + env(safe-area-inset-bottom));
        background: #FFF;
        box-shadow: 0px -8rpx 12rpx 0px rgba(0, 0, 0, 0.05);
        display: flex;
        align-items: center;
        padding: 0 30rpx env(safe-area-inset-bottom);
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        box-sizing: border-box;
    }